.iconUser {
    display: inline-block;
    background: url('../images/icon.png') no-repeat;
}

@mixin icon ($width, $height, $background-position, $vertical-align:baseline) {
    width: $width;
    height: $height;
    background-position: $background-position;
    vertical-align: $vertical-align;
}

// 头部找不锈图标
.iconUser-steel{
    @include icon(22px, 22px, 0 -101px,-3px)
}